Source : Webster's Revised Unabridged Dictionary (1913)

Villanage \Vil"lan*age\ (?; 48), n. [OF. villenage, vilenage.
   See {Villain}.]
   1. (Feudal Law) The state of a villain, or serf; base
      servitude; tenure on condition of doing the meanest
      services for the lord. [In this sense written also
      {villenage}, and {villeinage}.]

            I speak even now as if sin were condemned in a
            perpetual villanage, never to be manumitted.
                                                  --Milton.

            Some faint traces of villanage were detected by the
            curious so late as the days of the Stuarts.
                                                  --Macaulay.

   2. Baseness; infamy; villainy. [Obs.] --Dryden.

Source : WordNet®

villeinage
     n 1: the legal status or condition of servitude of a villein or
          feudal serf [syn: {villainage}]
     2: tenure by which a villein held land